CVE-2026-26133
High
Description
AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Microsoft 365 Copilot
PublishedMar 16, 2026
First seenMar 16, 2026
Weakness typeCWE-77Command injection
How to fix
Update
- microsoft 365_copilot2.107.2, 16.0.19815.10000 or later
- microsoft edge145.3800.99 or later
- microsoft excel2.106.2, 16.0.19822.20038 or later
- microsoft loop2.106 or later
- microsoft onenote16.0.19725.20142 or later
- microsoft outlook5.2605.0 or later
- microsoft power_bi2.2.260210.21290750 or later
- microsoft powerpoint2.106.2, 16.0.19822.20038 or later
- microsoft teams1.0.0.2026043102, 8.3.1 or later
- microsoft word2.106.2, 16.0.19822.20038 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft 365_copilot | v < 2.107.2, v < 16.0.19815.10000 | 2.107.2, 16.0.19815.10000 |
| microsoft edge | v < 145.3800.99 | 145.3800.99 |
| microsoft excel | v < 2.106.2, v < 16.0.19822.20038 | 2.106.2, 16.0.19822.20038 |
| microsoft loop | v < 2.106 | 2.106 |
| microsoft onenote | v < 16.0.19725.20142, No range specified | 16.0.19725.20142 |
| microsoft outlook | v < 5.2605.0, No range specified | 5.2605.0 |
| microsoft power_bi | v < 2.2.260210.21290750, No range specified | 2.2.260210.21290750 |
| microsoft powerpoint | v < 2.106.2, v < 16.0.19822.20038 | 2.106.2, 16.0.19822.20038 |
| microsoft teams | v < 1.0.0.2026043102, v < 8.3.1 | 1.0.0.2026043102, 8.3.1 |
| microsoft word | v < 2.106.2, v < 16.0.19822.20038 | 2.106.2, 16.0.19822.20038 |
Check your version
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